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CVE-2026-49278— Rocket.Chat: Livechat Visitor Profile Disclosure Leaks Bearer Token and Enables Visitor Impersonation

CVSS 6.7 · Medium EPSS 0.24% · P15

Possible ATT&CK Techniques 1AI

T1005 · Data from Local System

Affected Version Matrix 8

VendorProductVersion RangeStatus
RocketChatRocket.Chat>= 8.5.0-rc.0, < 8.5.0affected
>= 8.4.0-rc.0, < 8.4.2affected
>= 8.3.0-rc.0, < 8.3.4affected
>= 8.2.0-rc.0, < 8.2.4affected
>= 8.1.0-rc.0, < 8.1.5affected
>= 8.0.0-rc.0, < 8.0.6affected
>= 7.11.0-rc.0, < 7.13.8affected
< 7.10.12affected
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I. Basic Information for CVE-2026-49278

Vulnerability Information

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Vulnerability Title
Rocket.Chat: Livechat Visitor Profile Disclosure Leaks Bearer Token and Enables Visitor Impersonation
Source: NVD (National Vulnerability Database)
Vulnerability Description
Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12, in the visitors.info endpoint, https://developer.rocket.chat/apidocs/get-visitor-information-by-id-1, token is returned in the response. It looks like there's no use case for the token to be present in the response and it would be a good security practice to remove it altogether. This vulnerability is fixed in 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Rocket.Chat 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RocketChat rocket.chat是巴西RocketChat公司开源的一款团队协作即时通讯平台。 Rocket.Chat存在授权问题漏洞,该漏洞源于在visitors.info端点返回的响应中包含token,可能导致授权问题。以下版本受到影响:8.5.0之前版本、8.4.2之前版本、8.3.4之前版本、8.2.4之前版本、8.1.5之前版本、8.0.6之前版本、7.13.8之前版本和7.10.12之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
RocketChatRocket.Chat >= 8.5.0-rc.0, < 8.5.0 -

II. Public POCs for CVE-2026-49278

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III. Intelligence Information for CVE-2026-49278

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Vendor Advisories for CVE-2026-49278 (1)

Same Patch Batch · RocketChat · 2026-06-24 · 12 CVEs total

CVE-2026-456889.1 CRITICALRocket.Chat: Pre-Auth NoSQL Injection in CAS Login Handler leading to Arbitrary CAS/SAML U
CVE-2026-456899.1 CRITICALRocket.Chat: Pre-Auth NoSQL Injection in OAuth2 Token Endpoint leading to Arbitrary User A
CVE-2026-456878.5 HIGHRocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMess
CVE-2026-557628.1 HIGHRocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat
CVE-2026-557597.4 HIGHRocket.Chat: Apple Sign-In skips JWT claims validation, allowing expired and cross-audienc
CVE-2026-477334.4 MEDIUMRocket.Chat: Missing URL protocol sanitization in ImageElement allows javascript: URLs in
CVE-2026-45677Rocket.Chat: Lack of SAML Signature Check During Logout Could Lead To DoS
CVE-2026-45757Rocket.Chat: users.deactivateIdle` deactivates accounts without revoking existing login to
CVE-2026-49277Rocket.Chat: OAuth access and refresh tokens remain valid after account deactivation
CVE-2026-46423Rocket.Chat: SAML signature validation skipped when IdP certificate field is empty
CVE-2026-55666Rocket.Chat: Email Parameter Fallback Leads To Account Takeover Within Apple OAuth

IV. Related Vulnerabilities

V. Comments for CVE-2026-49278

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